Abstract: There are provided a reflective photomask and a reflective photomask blank having a high contrast of a minute pattern to an inspection light and capable of minimizing the shadowing effect in EUV exposure. A reflective photomask blank (100) of this embodiment includes: a substrate (11); a reflective part (17); and a low reflective part (18), in which the low reflective part (18) is a multi-layer structural body having at least two or more layers including an absorption layer (14) and an outermost layer (15), an extinction coefficient k to a wavelength of 13.5 nm of the absorption layer (14) is k>0.041, and the film thickness of the low reflective part (18) is a film thickness satisfying 0.5×da+dc?21.5 nm or a film thickness satisfying 0.5×da+dc?27.5 nm, wherein the film thickness of the absorption layer (14) is da and the film thickness of the outermost layer (15) is dc.

Abstract: There is provided a reflective photomask blank capable of suppressing or reducing the shadowing effect of a reflective photomask for patterning transfer using a light having a wavelength in the extreme ultraviolet region as a light source and sufficiently having heat resistance in exposure. The reflective photomask blank is configured to have a substrate 1, a reflective layer 2 including a multi-layer film formed on the substrate 1, and an absorption layer 4 formed on the reflective layer 2. The absorption layer 4 contains a total of 50 at % or more of indium (In) and nitrogen (N). The atomic number ratio (N/In) of nitrogen (N) to indium (In) in the absorption layer 4 is set to 0.5 or more and 1.5 or less. The layer thickness of the absorption layer 4 is set to 17 nm or more and 45 nm or less.

Abstract: A lens unit (LU) holding at least two lenses (4, 5) in a lens frame (1) adjacently in the optical axis direction and provided with positioning protrusions (2c, 2d) formed in correspondence with each of the two lenses (4, 5) in at least three separate locations in the peripheral direction of the lens frame (1), protruding from the inner surface of the lens frame (1) and contacting a peripheral surface of a corresponding lens to position the corresponding lens relative to the lens frame (1), an adhesive filling space (GSP1) formed between the peripheral surface of each of the two lenses (4, 5) and the inner surface of the lens frame (1) in overlap with the two lenses (4, 5), and an adhesive injection hole (1c) formed in the lens frame (1) in communication with the adhesive filling space (GSP1).

Abstract: A lens assembly comprises a lens group M and a lens frame 1 for retaining the lens group M. In this lens assembly, the lens frame 1 has an entire circumference support 2b for supporting the rim on the subject side, of each lens M, across the entire circumference thereof, and an end face support 2a for supporting the lens M on the image side. Each lens M comprises a chamfer 3b formed at a rim of a lens surface on the subject side across the entire circumference thereof, and the entire circumference support 2b supports the chamfer 3b such that the entire circumference support 2b is continuous with the lens surface at substantially the same radius of curvature with the lens surface. According to the present invention, there is provided a lens assembly which can reduce size and cost and has stable lens retaining ability.

Abstract: A lens assembly comprises a lens group M and a lens frame 1 for retaining the lens group M. In this lens assembly, the lens frame 1 has an entire circumference support 2b for supporting the rim on the subject side, of each lens M, across the entire circumference thereof, and an end face support 2a for supporting the lens M on the image side. Each lens M comprises a chamfer 3b formed at a rim of a lens surface on the subject side across the entire circumference thereof, and the entire circumference support 2b supports the chamfer 3b such that the entire circumference support 2b is continuous with the lens surface at substantially the same radius of curvature with the lens surface. According to the present invention, there is provided a lens assembly which can reduce size and cost and has stable lens retaining ability.

Abstract: An apparatus includes a detecting section for detecting a brightness level of a screen image of a video signal as an area brightness level for each of a plurality of display areas on a display screen; and an adjustment driving section for comparing the area brightness levels with each other and driving the display device by a driving signal representing the screen image so as to form a brightness level distribution of the screen image according to adjustment characteristics determined in accordance with the difference between the area brightness levels.

Abstract: To provide a data imprinting device for a camera which has a simple construction and does not make the main body of the camera large in size, a data imprinting device for a camera includes: an LED for optically generating data to be imprinted on a film surface; a prism for allowing data light generated by the LED to form an image on the film surface; a holder for holding the LED and the prism and disposed in such a manner as to be movable in a direction perpendicular to an optical axis for photographing of the camera; and data-imprinting-position changing means for moving the holder in interlocked relation with a changeover of a photographing image size on the film surface, and for changing a position of imprinting data on the film surface.

Abstract: To provide a data imprinting device for a camera which has a simple construction and does not make the main body of the camera large in size, a data imprinting device for a camera includes: an LED for optically generating data to be imprinted on a film surface; a prism for allowing data light generated by the LED to form an image on the film surface; a holder for holding the LED and the prism and disposed in such a manner as to be movable in a direction perpendicular to an optical axis for photographing of the camera; and data-imprinting-position changing means for moving the holder in interlocked relation with a changeover of a photographing image size on the film surface, and for changing a position of imprinting data on the film surface.